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From
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To
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Geolocation
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Author - title
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Year
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| details | Late Tatarian | USSR(Komi ASSR) | Chalyashev,V.I. On stratigraphy of the Upper Permian and Triassic of northern Pre-Ural | 1963 | |
| details | Late Permian | USSR(Far East) | Sukhov,L.G. et al. Biostratigraphy of Volcanic Formations in the western part of the Tunguska Syneclise | 1966 | |
| details | Kazanian | Early Tatarian | USSR(Evenki Nat.Okrug) | Hart,G.F. Permian palynofloras and their bearing on Continental Drift. (In: Paleogeographic Provinces and Provinciality, Charles A. Ross, editor) | 1974 |